"I walked up to them and said, 'Hi Girls. You don't know me but it looks like you're here studying and I wrote you a note of encouragement,'" she recalled.

The note said:

Hi Girls!

I sat near you today in Starbucks and listened as you talked. You three are obviously pretty and hard-working. I wish your kindness matched your pretty exteriors. I heard you talk about a girl who sang a song about being lonely in the talent show - and you laughed. About a girl who couldn't be lead singer because you got all the votes, about crappy presents other people have given you…and you sounded so mean and petty.

You are smart and you are pretty. It would take nothing from you to also be kind. - M.

"I have a pretty strong mind-your-own business policy, but I was sitting there having such a visceral reaction," said Icard told me. "I thought, 'Maybe nobody else is going to give them this feedback. I don't know that they're going to hear this any other way.'"

Before leaving the note, Icard had posted on Facebook about her anger at hearing the "horribly behaved" teens complain about "girls who copy them" and bad gifts they've received.

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